the camera

(the inside of a professional camera)

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Vocabulary:

• safelight - a light used in the darkroom during printing to provide illumination without giving unwanted exposure.
• brightness - a subjective impression of the lightness of an object.
• contrast - the difference in brightness between different light and dark tones.
• sharpness - subjective description of an image's focus and resolution.
• aperture - the size of the lens opening through which light passes.
• shutter - a camera mechanism that opens and closes to allow light to enter the camera for a certain amount of time to expose the film.
• exposure - the amount of light falling on a sensitive material.
• depth of field - the portion of a scene that appears sharp to the image.
• f-stop - the setting of a lens aperture, as indicated by an f-number.
• focal length - a measure of how strongly an optical system focuses or defocuses light.